Abstract
Because conventional switching converters are usually using unbalanced circuit topologies, parasitic capacitance between the drain of an MOS-FET and the frame ground through its heat sink may generate the common-mode conducted noise. We proposed a concept of balanced switching converter circuit, which is an effective way to reduce the common-mode conducted noise of a switching converter by current cancellation. In this paper, the path of the noise current in a balanced buck-boost converter circuit is investigated using a current probe. By measuring current waveforms and frequency spectra of the parasitic capacitances and the frame ground line, the mechanism of the common-mode noise reduction by current cancellation is clarified.
Original language | English |
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Pages (from-to) | 499-504 |
Number of pages | 6 |
Journal | Unknown Journal |
Publication status | Published - 2003 |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering